Roller for curtain fixtures



(Model.)

ZShe'ts-Sheet 1. 4J. B. PINCE.' VSPRING ROLLER FOR GURVTAINPIXTURBS..No. 291.502.

Patnted Jan I ai@ (Model.) 8 2 sheets-sheen 2 J. B. PINCE.`

SPRING RGLLBR POR GRTAIN FIXTURES. Nol 291,502. Patented Jan. 8, 1884.

i ihnirnn STATS .PATENT trice..

JAMES B. FING-H, OF NEVARK, NEV JERSEY.

seems-ROLLER `FOR CURTAIN-FIXTURES.

. SPECIFICATION `forming part of Letters Patent No. 291,502, datedJanuary 8, 1884. l

Applicnnnnlednprnea,rees. (Moin-.1.) l

` i andl'do hereby declare the following to be afull,

clear, and exact description of the` invention,

l i sue-h as will enable others skilled in the art to which itappertains to make and use the same, referencebeing had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this speciiication.

The objectof this invention is to prevent a spring-actuated curtain fromrolling entirely np when, in the process of raising it or of drawing thesame down, it accidentally slips from the manipulators hand, whichaction on the part of said curtain has heretofore made it necessaryto'climb to within reach thereof to gain access `to it and draw it toits required position-a process involving considerable trouble. Y

The invention consists in the arrangements and combinations of parts, aswill be hereinafter set forth, and iinally embodied in the claims. l

Referring to the accompanying drawings, embodied in two sheets, in whichsimilar letters of reference indicate like parts in each of the severalfigures, Figure l is an elevationof a curtain arranged in connectionwith a springactuated roll. Fig. 2 is an end view of aroller, showingcertain detaining mechanism. Fig.

`3 is a sectional view, showing. the same more clearly. Figs. L and 5are respectivelyT a plan and edge view of a compound detent, or twodetents united. Fig. 6 is avertical longitudinal section of aportion ofthe roll, showing the actuating and detaining mechanism. Fig.

`7 shows a modiiedform of my improvements.

Fig. S illustrates my device when the detention ofthe roll has beenoccasioned by a slow movement of the curtain, and Fig. 9 illustrates indetail a box carrying certain abutments for the detent. On Sheet 2,Figs. 10, 1l, and 12 illustrato, respectively, a side view of a box,containing modified forms of i the detaining mechanism, a section of theend of a roller containingthe same, and an edge view of a detent.

In carrying out my invention, l construct the roller proper, a, having aspring-chamber therein, and carrying a spring, b, and spindle d, in anyordinary manner, and on the end of the roll is secured, by means of aferrule7 f, a box, e, which is caused to revolve with the curtain-rollby means of any suitable mechanism, such as the projections g, Fig. 9,which are thrust into the end of said roller. y, Said box e is providedwith suitable abutinents for the detent, as will be set forth. Hthinsaid box is arranged suitable detaining mechanism adapted to detain thecurtain when the same is being rolled up either slowlyor rapidly. Saiddetaining mechanism consists in a sliding compound detent, mia, arrangedto work either around the spindle d, as shown in Fig. 7,7through thesame, as in Figs. 2, 31, and 6,

vat one side of the spindle, as in Fig. l1, or

otherwise, thelast particularized arrangement being, from itssimplicity, preferred. Said detent is constructed to engage at either ofits ends with abutments or holding-surfaces on the box c, whichabutments may be formed by cutting or making slots h 'i in the wall ofthe box, h being to cooperate-with the upper extremity of the detent,and il to receive the lower extremity, a. Said slot and detent are soarranged as that the lower extremity 0f said detent will not fall intothe slot 7L, (or otherwise engage with the abutment for the upperdetent,) but will be inoperative in its relation thereto. i This iseffected by arranging the extremities of said detent out of a verticalline, as shown in Fig. 6, or it may be attained in any other way.On'a'slow upward movement of a hanging curtain, occasioned by the recoilofthe spring b, the lower extremity of the detent gravitates into one ofthe openings i, and is held` by engagement with the abutment thereof.When the curtain is again lowered, an incline, s, on the detent strikesa lug, projection, or, vas in the case illustrated by Figs. Zand 3, aside portion of a staple or loop, r, said lug, staple, or projectionbeing arranged on a plate or portion, t, secured to, arranged on orwhich is integral with the spindle. 'lhe engagement` of the lug or loopr with the inclined portion of the detent causes the latter to rise whenthe perforated or slotted box throws said detent tow-ard said lug orprojection, as will be understood. A more rapid ICO upward movementofthe curtain caused by a moderately-quick revolution of the roll is nothindered or-prevented by portion or detenta entering the slot i, as saiddetent will not have sufficient time to make a holding-engagement. Aquick revolution of the roll, caused when the action ofthe spring is nottrammeled by the weight of the hand, as when the curtain slips from saidhand and tends to fiy to the top ofthe window, is immediately checked bymechanism, as follows: Upon the inner surface of the box slightlyprojects a lug, on, which in its'passage with the roller strikes thelower extremity of the detent7 throwing it up into the longer slot h,and causes it to engage l withthe abutment therein before said detentcan again fall. By drawing the curtain with the, hand, said detent will,by its own weight, fall and allow a moderate upward movement of thecurtain.

It will be observed that my device provides .mechanism for checking slowrevolution of the curtain-roll, and, in addition, other mechanism forchecking quick revolution, moderate revolution being unobstructed; butas I am aware that the-same results can be obtained by considerablymodifying the construction shown andparticularly described-as, forexample, making the combined detents herein shown in separate andindependent pieces-I do not wish to be understood as limiting myselfthereto.

Having thus described my invention, what I claim -as new is- 1. Incombination, the spring-actuated cur- 35' tain-roll, the compound detenthaving the in oline s, the box e, having abutments for said detent, andan inwardly-projecting lug, m, the plate t, and projection 1', allarranged and operating substantially as herein set forth and 4o shown.

2. In combination, the spring-actuated curtainroller, carrying the boxe,having the slots 7L z', with inwardly-proj ecting lug m, the detent mn,having the incline s, and lug or projection 4 5 r, all being arrangedand operating substantially as and for the vpurpose herein set forth andshown.

3. In combination, in a spring-actuated curtain-roll, the box having thelug Wnadapted 5o to throw the sliding detent into engagement with anabutment on said box, and having an abutment to receive said detentwhensaid box is revolving at a slow rateof speed, and a sliding detenthaving its opposite extremities 5 free to engage with said abutmentsandlug7 substantially as set forth and shown.

4. In combination, the box having the slots h z' and lug m, and thesliding detent, all arranged and operating substantially as and for 6othe purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this22d-day of March, 1883.

v J AMES B. FINCH.

Witnesses:

CHARLES H. PELL, JosIAH ALLEN.

